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Magnetically aligned dust and SiO maser polarization in the envelope of the red supergiant VY CMa
W. H. T. Vlemmings, T. Khouri, I. Marti-Vidal +9
We use Atacama Large Millimeter/submillimeter Array Band 5 science verification observations of the red supergiant VY CMa to study the polarization of SiO thermal/masers lines and…
Simultaneous 183 GHz H2O Maser and SiO Observations Towards Evolved Stars Using APEX SEPIA Band 5
E. M. L. Humphreys, K. Immer, M. D. Gray +10
We investigate the use of 183 GHz H2O masers for characterization of the physical conditions and mass loss process in the circumstellar envelopes of evolved stars. We used APEX SEP…
ALMA observations of TiO around VY Canis Majoris
E. De Beck, W. Vlemmings, S. Muller +7
Titanium dioxide, TiO, is a refractory species that could play a crucial role in the dust-condensation sequence around oxygen-rich evolved stars. To date, gas phase TiO has…
First Results from High Angular Resolution ALMA Observations Toward the HL Tau Region
ALMA Partnership, C. L. Brogan, L. M. Perez +82
We present Atacama Large Millimeter/submillimeter Array (ALMA) observations from the 2014 Long Baseline Campaign in dust continuum and spectral line emission from the HL Tau region…
ALMA Observations of Anisotropic Dust Mass-loss in the Inner Circumstellar Environment of the Red Supergiant VY Canis Majoris
E. O'Gorman, W. Vlemmings, A. M. S. Richards +8
The processes leading to dust formation and the subsequent role it plays in driving mass loss in cool evolved stars is an area of intense study. Here we present high resolution ALM…
Magnetic Fields in Evolved Stars: Imaging the Polarized Emission of High-Frequency SiO Masers
W. H. T. Vlemmings, E. M. L. Humphreys, R. Franco-Hernández
We present Submillimeter Array observations of high frequency SiO masers around the supergiant VX Sgr and the semi-regular variable star W Hya. The J=5-4, v=1 28SiO and v=0 29SiO m…